MSI MICRO ATX AL12 User Manual page 32

A battery must be used to retain the mainboard configuration in CMOS
RAM. If you use the on-board battery, you must short 1-2 pins of JCMOS1
to keep the CMOS data.
JCMOS1
Short 1-2
Short 2-3
Open
Note: You can clear CMOS by shorting 2-3 pin, while the system is off.
Then, return to 1-2 pin position. Avoid clearing the CMOS while
the system is on; it will damage the mainboard. Always unplug the
power cord from the socket wall.
Function
Normal Operation
Clear CMOS & Password
Flash Recovery
2-27
1
3
JCMOS1